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Chemistry

Chemistry
Which one of the following has greatest mass ?

Neutron
Proton
Hydrogen nucleus
Electron

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Chemistry
Tar roads get damaged if there is

Heavy traffic
No maintenance
Stagnation of water on road
No sloping

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Chemistry
Which one of the following contains maximum percentage of carbon ?

Cast iron
Wrought iron
High speed steel
Stainless steel

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Chemistry
The most abundant rare gas in the atmosphere is

Ne
Ar
Xe
He

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Chemistry
Which of the following vegetable oils does not contain essential fatty acids ?

Groundnut oil
Coconut oil
Sunflower oil
Mustard oil

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Chemistry
Hardness of the water is commonly measured in terms of

Magnesium sulphate equivalents
Calcium carbonate equivalents
Magnesium carbonate equivalents
Calcium sulphate equivalents

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